<!DOCTYPE html>

<html lang="CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>未登录</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
    <link rel="stylesheet" href="css/add.css">
    <script type="text/javascript" src="js/jquery.min.js"></script>

</head>

<body>
    <script src="js/jquery.min.js"></script>
    <script>
        alert("未登录");

        dirt();
        function dirt() {
            location.href = "login.html";
        };

    </script>
</body>
</html>